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The investigation for the influence of the line-width of probe light on the phase noise of phase-sensitive optical time domain reflectometry
Author(s): Chaoli Liang; Yang Lu; Xueliang Zhang; Mo Chen; Jianfei Wang; Zhou Meng
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Paper Abstract

In this papers, the influence of the line-width of probe light on the phase noise of phase extracted based phase-sensitive optical time domain reflectometry (Φ-OTDR) is theoretical analyzed and experimentally investigated. Analysis indicates that broad line-width probe light suffers time varying wavelength drift and high level of laser phase noise, and thus guarantees high level phase noise of the Φ-OTDR. In distributed acoustic sensing along 500 m sensing fiber, the phase noise is evaluated for probe lights of different line-widths, and experimental results display that the phase noise increases as the line-width of probe light broadens.

Paper Details

Date Published: 15 November 2018
PDF: 4 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109640E (15 November 2018); doi: 10.1117/12.2504195
Show Author Affiliations
Chaoli Liang, National Univ. of Defense Technology (China)
Yang Lu, National Univ. of Defense Technology (China)
Xueliang Zhang, National Univ. of Defense Technology (China)
Mo Chen, National Univ. of Defense Technology (China)
Jianfei Wang, National Univ. of Defense Technology (China)
Zhou Meng, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yue Yang, Editor(s)

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